Home / 20,650.05-28,497.14-11,699.21

Finding the Fourth Proportional to 20,650.05, 28,497.14 and 11,699.21

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Solution

The fourth proportional to 20,650.05, 28,497.14 and 11,699.21 is: 16,144.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,650.05 : 28,497.14 = 11,699.21 : x
  2. Step 2: Convert to fraction form
    20,650.05/28,497.14 = 11,699.21/x
  3. Step 3: Cross multiply
    20,650.05x = 28,497.14 × 11,699.21
  4. Step 4: Simplify right side
    20,650.05x = 333,394,025.26
  5. Step 5: Solve for x
    x = 333,394,025.26/20,650.05
  6. Step 6: Final answer
    x = 16,144.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.